Perhaps you should try some spelling variations:
"thong tran dat slippers" » "thong than dat slippers", "thong tren dat slippers", "phuong tran dat slippers", "thong trai dat slippers", "thong tan dat slippers", "thong tran dat slippery", "thong tran dat grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thong tran dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong tran dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong tran dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong tran dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.